I voted for Emma Christina Scott, because Emma is a favourite of mine. I also think Willow or Juliet would be nice!

I also like Emma, but also voted for Aria, a name I don't usually like. Best of luck!

On middle names: There's no point to them.On picking kid's names for nicknames: Just name the kid the nickname in the first place if you're that set on ever using it.Someone with a difficult name thought on giving out "unique" names: Please stop and think how your kid's life will be growing up with a really difficult/awkward moniker.

I voted for Emma, but I also like Willow as a close second. I think ScarlettScott maybe a little too much in both the start and end sounds being alike, though ScarlettChristina is lovely. As your surname can also be used as a first name, I'd avoid Harper, another surname name, and Aria is prone to being constantly mispronounced as there's several ways for it. Juliet I'm just not a fan of in general and like Scarlett feels like too much with your surname. Julia would work, but the -t on the end doesn't.